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Maarten Bodewes's user avatar
Maarten Bodewes's user avatar
Maarten Bodewes's user avatar
Maarten Bodewes
Moderator
  • Member for 12 years, 5 months
  • Last seen this week
  • Doggerland II
7 votes
Accepted

For password-based authenticated encryption is it OK to derive the auth key from the crypt key with 1 iteration?

5 votes
Accepted

Security Strength of Symmetric vs Asymmetric Ciphers

2 votes

Derive related universally unique identifier (UUID) from a main UUID

3 votes
Accepted

Significance of theoretical weaknesses?

3 votes
Accepted

Correlation between IV value and the output of a hash function

6 votes

Does using multiple hashes (to check if a file has been spoofed) reduce collisions?

1 vote
Accepted

Is it safe to encrypt a message with AES-ECB two times?

13 votes
Accepted

Why MACs are so important despite digital signatures doing everything a MAC can do and more?

1 vote
Accepted

Deriving private keys from a signature/HSM

5 votes

Lastpass PBKDF2 and salt

1 vote

Why is it impossible for asymetric ciphers to be stream ciphers?

7 votes

How strong are Bitlocker recovery keys?

2 votes

AES-GCM with HMAC

3 votes

AES vs. SHA2 in key-stream generation

2 votes

Is there any point in extending an 80-bit key before using it for HMAC-SHA256?

4 votes

Why GCM is used more often than CTR?

4 votes
Accepted

How can AES-CCM behave as an AEAD stream cipher?

4 votes

Is HTTPS encryption using the RSA algorithm?

8 votes
Accepted

Max message length when encrypting with public key

2 votes
Accepted

Does encrypting data all at once or in chunks using the AES algorithm makes any difference?

11 votes
Accepted

AES256-CBC vs AES256-CTR in SSH

1 vote

What qualifies as a key?

1 vote
Accepted

Understanding AES-GCM IV (Nonce), Tag/MAC, Message & Transmission

1 vote
Accepted

Is it secure to use XOR to encrypt a 32bit number?

3 votes

Data Origin Authentication vs Non Repudiation?

11 votes
Accepted

Can I use MAC as CTR mode nonce, if my messages are non-repeating?

0 votes
Accepted

Block cipher decryption

3 votes

End-to-end mobile chat application

5 votes
Accepted

How do certificates help?

2 votes

Standardized names of cryptographic algorithms

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